Snax at the Shmoo group has figured it all out
http://airsnort.shmoo.com/orinocoinfo.html
and if i read right there is a new update from Snax as well...
you will need Windows to flash the card, but when you run ws_606.exe it will show you the firmware version you have and ask if you want to "downgrade" your firmware. I have gone back and forth with no trouble a couple of times trying different things. and i got all the updates from the ftp site JimmyPopAli posted
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